Migrate dartium_tools from chrome branch to dart repo

tools/dartium/update_deps.py

Index: tools/dartium/update_deps.py
diff --git a/tools/dartium/update_deps.py b/tools/dartium/update_deps.py
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+++ b/tools/dartium/update_deps.py
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+#!/usr/bin/python
+
+# Update Dartium DEPS automatically.
+
+from datetime import datetime, timedelta
+import optparse
+import os
+import re
+from subprocess import Popen, PIPE
+import sys
+from time import strptime
+
+# Instructions:
+#
+# To run locally:
+#  (a) Create and change to a directory to run the updater in:
+#      > mkdir /usr/local/google/home/$USER/dartium_deps_updater
+#      > cd /usr/local/google/home/$USER/dartium_deps_updater
+#
+#  (b) Make a 'deps' directory to store temporary files:
+#      > mkdir deps
+#
+#  (c) Checkout dart/tools/dartium (with this script):
+#      > svn co https://dart.googlecode.com/svn/branches/bleeding_edge/dart/tools/dartium dartium_tools
+#
+#  (d) If your home directory is remote, consider redefining it for this shell/script:
+#      > cp -R $HOME/.subversion /usr/local/google/home/$USER
+#      > export HOME=/usr/local/google/home/$USER
+#
+#  (e) Test by running (Ctrl-C to quit):
+#      > ./dartium_tools/update_deps.py
+#      > ./dartium_tools/update_deps.py --target=multivm
+#      > ./dartium_tools/update_deps.py --target=clank
+#      > ./dartium_tools/update_deps.py --target=integration
+#
+#  (f) Run periodical update:
+#      > while true; do ./dartium_tools/update_deps.py --force ; sleep 300 ; done
+
+########################################################################
+# Repositories to auto-update
+########################################################################
+
+BRANCH_CURRENT="dart/1847"
+BRANCH_NEXT="dart/1916"
+BRANCH_MULTIVM="dart/multivm"
+
+TARGETS = {
+  'dartium': (
+    'https://dart.googlecode.com/svn/branches/bleeding_edge/deps/dartium.deps',
+    'dartium',
+    ['webkit', 'chromium'],
+    BRANCH_CURRENT,
+    ),
+  'integration': (
+    'https://dart.googlecode.com/svn/branches/dartium_integration/deps/dartium.deps',
+    'dartium',
+    ['webkit', 'chromium'],
+    BRANCH_NEXT,
+    ),
+  'clank': (
+    'https://dart.googlecode.com/svn/branches/bleeding_edge/deps/clank.deps',
+    'dartium',
+    ['webkit', 'chromium'],
+    BRANCH_CURRENT,
+    ),
+  'multivm': (
+    'https://dart.googlecode.com/svn/branches/bleeding_edge/deps/multivm.deps',
+    'multivm',
+    ['blink'],
+    BRANCH_MULTIVM,
+    ),
+}
+
+# Each element in this map represents a repository to update.  Entries
+# take the form:
+#  (repo_tag: (svn_url, view_url))
+#
+# The repo_tag must match the DEPS revision entry.  I.e, there must be
+# an entry of the form:
+#   'dartium_%s_revision' % repo_tag
+# to roll forward.
+#
+# The view_url should be parameterized by revision number.  This is
+# used to generated the commit message.
+REPOSITORY_INFO = {
+    'webkit': (
+        'http://src.chromium.org/blink/branches/%s',
+        'http://src.chromium.org/viewvc/blink?view=rev&revision=%s'),
+    'blink': (
+        'http://src.chromium.org/blink/branches/%s',
+        'http://src.chromium.org/viewvc/blink?view=rev&revision=%s'),
+    'chromium': (
+        'http://src.chromium.org/chrome/branches/%s',
+        'http://src.chromium.org/viewvc/chrome?view=rev&revision=%s'),
+}
+
+REPOSITORIES = REPOSITORY_INFO.keys()
+
+########################################################################
+# Actions
+########################################################################
+
+def write_file(filename, content):
+  f = open(filename, "w")
+  f.write(content)
+  f.close()
+
+def run_cmd(cmd):
+  print "\n[%s]\n$ %s" % (os.getcwd(), " ".join(cmd))
+  pipe = Popen(cmd, stdout=PIPE, stderr=PIPE)
+  output = pipe.communicate()
+  if pipe.returncode == 0:
+    return output[0]
+  else:
+    print output[1]
+    print "FAILED. RET_CODE=%d" % pipe.returncode
+    sys.exit(pipe.returncode)
+
+def parse_iso_time(s):
+  pair = s.rsplit(' ', 1)
+  d = datetime.strptime(pair[0], '%Y-%m-%d %H:%M:%S')
+  offset = timedelta(hours=int(pair[1][0:3]))
+  return d - offset
+
+def parse_git_log(output, repo):
+  if len(output) < 4:
+    return []
+  lst = output.split(os.linesep)
+  lst = [s.strip('\'') for s in lst]
+  lst = [s.split(',', 3) for s in lst]
+  lst = [{'repo': repo,
+      'rev': s[0],
+      'isotime':s[1],
+      'author': s[2],
+      'utctime': parse_iso_time(s[1]),
+      'info': s[3]} for s in lst]
+  return lst
+
+def parse_svn_log(output, repo):
+  lst = output.split(os.linesep)
+  lst = [s.strip('\'') for s in lst]
+  output = '_LINESEP_'.join(lst)
+  lst = output.split('------------------------------------------------------------------------')
+  lst = [s.replace('_LINESEP_', '\n') for s in lst]
+  lst = [s.strip('\n') for s in lst]
+  lst = [s.strip(' ') for s in lst]
+  lst = [s for s in lst if len(s) > 0]
+  pattern = re.compile(' \| (\d+) line(s|)')
+  lst = [pattern.sub(' | ', s) for s in lst]
+  lst = [s.split(' | ', 3) for s in lst]
+  lst = [{'repo': repo,
+      'rev': s[0].replace('r', ''),
+      'author': s[1],
+      'isotime':s[2][0:25],
+      'utctime': parse_iso_time(s[2][0:25]),
+      'info': s[3].split('\n')[2]} for s in lst]
+  return lst
+
+def commit_url(repo, rev):
+  numrev = rev.replace('r', '')
+  if repo in REPOSITORIES:
+    (_, view_url) = REPOSITORY_INFO[repo]
+    return view_url % numrev
+  else:
+    raise Exception('Unknown repo');
+
+def find_max(revs):
+  max_time = None
+  max_position = None
+  for i, rev in enumerate(revs):
+    if rev == []:
+      continue
+    if max_time is None or rev[0]['utctime'] > max_time:
+      max_time = rev[0]['utctime']
+      max_position = i
+  return max_position
+
+def merge_revs(revs):
+  position = find_max(revs)
+  if position is None:
+    return []
+  item = revs[position][0]
+  revs[position] = revs[position][1:]
+  return [item] + merge_revs(revs)
+
+def main():
+  option_parser = optparse.OptionParser()
+  option_parser.add_option('', '--target', help="Update one of [dartium|integration|multivm|clank]", action="store", dest="target", default="dartium")
+  option_parser.add_option('', '--force', help="Push DEPS update to server without prompting", action="store_true", dest="force")
+  options, args = option_parser.parse_args()
+
+  target = options.target
+  if not target in TARGETS.keys():
+    print "Error: invalid target"
+    print "Choose one of " + str(TARGETS)
+  (deps_dir, prefix, repos, branch) = TARGETS[target]
+  deps_file = deps_dir + '/DEPS'
+
+  src_dir = "/usr/local/google/home/%s/dartium_deps_updater/deps/%s" % (os.environ["USER"], target)
+  os.putenv("GIT_PAGER", "")
+
+  if not os.path.exists(src_dir):
+    print run_cmd(['svn', 'co', deps_dir, src_dir])
+
+  os.chdir(src_dir)
+
+  # parse DEPS
+  deps = run_cmd(['svn', 'cat', deps_file])
+  rev_num = {}
+  for repo in repos:
+    revision = '%s_%s_revision":\s*"(.+)"' % (prefix, repo)
+    rev_num[repo] = re.search(revision, deps).group(1)
+
+  # update repos
+  all_revs = []
+  for repo in repos:
+    (svn_url, _) = REPOSITORY_INFO[repo]
+    output = run_cmd(["svn", "log",  "-r", "HEAD:%s" % rev_num[repo], svn_url % branch])
+    revs = parse_svn_log(output, repo)
+    if revs and revs[-1]['rev'] == rev_num[repo]:
+      revs.pop()
+    all_revs.append(revs)
+
+  pending_updates = merge_revs(all_revs)
+  pending_updates.reverse()
+
+  print
+  print "Current DEPS revisions:"
+  for repo in repos:
+    print '  %s_%s_revision=%s' % (prefix, repo, rev_num[repo])
+
+  if len(pending_updates) == 0:
+    print "DEPS is up-to-date."
+    sys.exit(0)
+  else:
+    print "Pending DEPS updates:"
+    for s in pending_updates:
+      print "  %s to %s (%s) %s" % (s['repo'], s['rev'], s['isotime'], s['info'])
+
+  # make the next DEPS update
+  os.chdir(src_dir)
+  run_cmd(['rm', 'DEPS'])
+  print run_cmd(['svn', 'update'])
+  s = pending_updates[0]
+
+  pattern = re.compile(prefix + '_' + s['repo'] + '_revision":\s*"(.+)"')
+  new_deps = pattern.sub(prefix + '_' + s['repo'] + '_revision": "' + s['rev'] + '"', deps)
+  write_file('DEPS', new_deps)
+
+  commit_log = 'DEPS AutoUpdate: %s to %s (%s) %s\n' % (s['repo'], s['rev'], s['isotime'], s['author'])
+  commit_log += s['info'] + '\n' + commit_url(s['repo'], s['rev'])
+
+  write_file('commit_log.txt', commit_log)
+  print run_cmd(['svn', 'diff'])
+  print
+  print "Commit log:"
+  print "---------------------------------------------"
+  print commit_log
+  print "---------------------------------------------"
+
+  if not options.force:
+    print "Ready to push; press Enter to continue or Control-C to abort..."
+    sys.stdin.readline()
+  print run_cmd(['svn', 'commit', '--file', 'commit_log.txt'])
+  print "Done."
+
+
+if '__main__' == __name__:
+  main()